US20190201735A1 - Free weight bar stabilizer - Google Patents

Abstract

A free weight bar stabilizer, to be used with a standard size bar and attached barbell plates. The stabilizer includes a beam pivotally attached to a frame at a pivot point so that it is angularly movable in an arc between a raised position and a lowered position, and a carriage attached to the beam so that it is linearly movable radially out from the pivot point between a retracted position and an extended position. The carriage includes spaced distal arms with attachment points for attaching the bar to support its opposing ends. The bar is thus freely movable within an envelope defined by the ranges of the simultaneous angular movement of the beam and the linear movement of the attachment points on the carriage. The free weight bar stabilizer may also include a carriage counterweight that simultaneously moves on the beam in the opposite direction of the carriage to counterbalance the weight of the carriage, so it does not add to the quantity of the weight being lifted and reduce push and pull of the carraige. Further, the bar stabilizer may include an assisting weight mechanism to assist when working heavy negitives, by providing a counterweight to reduce the actual weight being lifted at a predetermined point as the beam moves toward the lowered position.

Description

BACKGROUND OF INVENTIONField of the Invention
• The present invention relates to the field of free weight training devices, and more particularly to a device that stabilizes the free weight bar when being used in lifting and exercising.
Description of Related Art
• Free weight training using a bar, with attached barbell plates, is the most desirable way to increase strength with all types of athletes, at all levels. A major challenge in working with free weights is to keep the bar stable while being used, particularly when loaded with numerous barbell plates. The bar tends to tip from side-to-side, and roll down the neck when performing certain routines, such as the “good morning”. To compensate for unintended bar movement, the lifter must fight the bar to keep the loaded bar under control, and preferably will have other individuals act as “spotters” to prevent the bar from moving out of control, and possibly causing injuries.
• Frequently, lifters work ‘heavy negatives’ to allow them to gradually work up to a heavier weight lifted. Sometimes, the lifter works with a desired weight through an initial portion of the routine, and then uses a lighter weight at a later portion of the routine. The lighter weight portion of the routine is then gradually reduced until the desired heavier weight is applied during the entire routine.
• Other than chains or binds, there are no known devices available in the prior art to assist the lifter for incrementally adjusting the load during the performance of a routine.
• As a consequence of the foregoing situation there has existed a longstanding need for a new and improved device for stabilizing a free weight bar and the provision of such a construction is a stated objective of the present invention.
BRIEF SUMMARY OF THE INVENTION
• Briefly stated, the present invention provides a free weight bar stabilizer, to be used with a standard size bar and attached barbell plates. The stabilizer includes beams pivotally attached to a frame at a pivot point so that it is angularly movable in an arc between a raised position and a lowered position, and a carriage attached to the beams so that it is linearly movable radially out from the pivot point between a retracted position and an extended position. The carriage includes spaced distal arms with attachment points for attaching the bar to support its opposing ends. The bar is thus freely movable within an envelope defined by the ranges of the simultaneous angular movement of the beam and the linear movement of the attachment points on the carriage. The free weight bar stabilizer may also include a carriage counterweight that simultaneously moves on the beam in the opposite direction of the carriage to counterbalance the weight of the carriage, so it does not add to the quantity of the weight being lifted and stops pull or push of the carriage in or out. Further, the bar stabilizer may include an assisting weight mechanism to assist when working heavy negatives, by providing a counterweight to reduce the actual weight being lifted at a predetermined point, as the beam moves toward the lowered position.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
• These and other attributes of the invention will become more clear upon a thorough study of the following description of the best mode for carrying out the invention, particularly when reviewed in conjunction with the drawings wherein:
• FIG. 1 is a perspective view of the free weight bar stabilizer of the present invention, showing the bar in a raised position supported on a vertical frame member;
• FIG. 2 is a perspective view similar toFIG. 1, but showing the bar in a lowered position resting on the spotting rail;
• FIG. 3 is a side elevation view of the bar stabilizer;
• FIG. 4 is a partial plan view, with structure eliminated to clearly show the carriage supported on the front section of the main beams;
• FIG. 5 is an enlarged partial side elevational view showing the front section of the beam carrying the roller assembly of the carriage; and
• FIG. 6 is a partial plan view, with structure eliminated to clearly show the counterweight supported on the rear section of the main beams, and to show the linkage that interconnects the carriage and the counterweight.
DETAILED DESCRIPTION OF THE INVENTION
• As can be seen by the reference to the drawings, and particularly toFIGS. 1 and 2, the free weight bar stabilizer that forms the basis of the present invention is designated generally by thereference number10.
• Thebar stabilizer10 includes aframe20, a pair ofmain beams30 pivotally attached to theframe20, and amoveable carriage40 supported on afront section32 of thebeams30. Thestabilizer10 shown in the drawings further includes acarriage counterweight60 supported on arear section34 of thebeams30; and also includes an assisting weight mechanism80.(not show inFIGS. 1-2)
• As shown inFIGS. 3 and 4, theframe20, at each lateral side, supports abearing22 that receives apivot shaft24 disposed to rotate about a horizontal axis. Thepivot shafts24 are positioned on each side of theframe20 at an elevation of about thirty-six inches, which approximates the position of the hip joint of an average person. Abeam30 is pivotally attached to each of theshafts24 with afront section32 and arear sections34 located fore and aft of theshafts24, respectively. Thebeams30 are disposed parallel to each other and move between a raised and lowered position in an arc shown by thedirectional arrow36.
• A linearlymovable carriage40 is received on thefront section32 of each of thebeams30. Thecarriage40 includes horizontally spacedarms42 that each have abearing43, with aset screw44, attached adjacent a bar receiving opening45 at the distal end of thearms42. A roller assembly, that includes aroller bracket48 carrying fourrollers50, is attached to and movably interconnects thefront section32 of each of thebeams30 and a rear portion of thecarriage40. Acarriage brace52 assists and keeping thecarriage arms42 parallel to thefront section32 of thebeams30. Thecarriage40 is linearly movable radially out from thebeams30 between a retracted and extended position shown by thedirectional arrow46. The combined angular range of motion of thebeam30, and the linear range of motion of the bar receiving opening45 on each of thecarriage arms42, defines the envelope of operation26 of thefree weight stabilizer10.
• In use, a standard Olympicbar100 is placed through the opening45 and the bearing setscrews44 are tightened. The desired weight is added by attaching and securingbarbell plates150 at the ends of thebar100. The starting height of thebar100 may be anywhere in the envelope of operation26.
• FIG. 1 shows thebar100 on abar rest21 attached to a vertical member of theframe20 at a starting height of about fifty-four inches, which approximates the position of the shoulders and neck of the average lifter. The envelope of operation26 shown has an upper limit defined by the location of thebar rest21, and a lower limit defined by thespotting rail23 that extends out from the front of theframe20. If using thespotting rail25 that is adjustable usingpins27 andholes28, as shown in dashed lines, the envelope of operation26 would be reduced.
• It may be desirable to compensate for the weight of thecarriage40 that is acting on the lifter by providing acounterweight60 that would balance the weight of the front andrear sections32,34 of thebeam30. This could result in the lifter experiencing only the weight of thebar100 and the attached thebarbell plates150.
• As best shown inFIGS. 3 and 6,brackets62 support acounterweight track64 above and parallel to therear section34 of each of thebeams30. Ashaft65 extends transversely between thetracks64, and carries acounterweight60, secured bylock collars68, interior of each of thetracks64. Aroller70 is attached at each end of theshaft65 to engage thetracks64. Thus, thecounterweights60 are attached to therear section34 of thebeams30, and are moveable between a forward position and a rearward position as indicated by thedirectional arrow66. To further refine the balancing of weight on the front andrear sections32,34 of thebeam30, a linkage is provided to interconnect thecarriage40 andcounterweight60. Using this linkage, as thecarriage40 moves from its retracted position to its extended position, thecounterweight60 simultaneously moves from its forward position to its rearward position.
• Referring again toFIGS. 3 and 6, the linkage includes twopulleys72, one attached to thefront section32 of thebeams30 and the other attached to therear section34 of thebeams30 by apulley bracket71 and astandoff73. A front section ofcable74 has ends attached to an anchor75 on thecarriage40, and to ananchor76 on thecounterweight60. Thecable74 is trained over thepulley72 at thefront section32 of thebeams30. A rear section ofcable74 is also attached to theanchors75 and76, and is trained over thepulley72 at therear section34 of thebeams30. Springs78 keep tension on thecable74. The movement of thecarriage40 in one direction results in simultaneous movement of thecounterweight60 in the other direction to keep thebeam30 in balance. Thus, the lifter experiences only the weight of thebar100 and the attachedbarbell plates150.
• At times it is desirable to change the amount of weight being lifted during the course of an exercise routine. An assistingweight mechanism80 is provided that has an assistingweight bar rest82 positioned at the rear of both sides of theframe20. An assisting weightbar pickup hook84 is carried onhook plate86 attached at therear section34 of thebeams30. Thehook plates86 are connected by transverse tie bars88 to keep them properly spaced and stabilized. Each of thehook plates86 are arcuate in shape, and include a number ofopenings87 spaced in an arcuate path along the rear edge of theplates86. A selected one of theopenings87 on thehook plates86 is adapted to selectively receive and support apickup hook84.Hooks84, attached at the same elevation on each of opposingplates86, are disposed to engage and lift and assistingweight bar200 up from thebar rest82. When theassist bar200, with any attached weights, is raised off therest82, the total weight picked up becomes a counterweight to thefront section32 of thebeams30 that carries the weight of themain bar100 and attachedbarbell plates150 being lifted. Thus, as the lifter bends down so that themain bar100 on thecarriage40 moves toward the lowered position, the total weight being lifted is reduced at the predetermined point where theassist bar200 is engaged by thehooks84 and is raised. Changing the location of the pickup hooks84 on theassist plates86, changes the point where the total weight being lifted is changed.
• The freeweight bar stabilizer10 of the present invention is particularly useful as the device for strengthening the posterior muscle chain through the ‘good morning’ and the ‘Zercher’ lift routines. Other exercises such as squats, deadlifts, shrugs and various bench routines may also be performed using thebar stabilizer10. The assistingweight mechanism80 assists the lifter when working ‘heavy negatives’, by reducing the weight being lifted at a particular point in a routine, to allow the lifter to gradually work up to a heavier desired weight.
• In general, thebar stabilizer10 allows thebar100 to follow the lifter throughout the range of the movement within the working envelope of thebar100. When performing the ‘good morning’ routine, thestabilizer10 prevents thebar100 from tipping from side to side, and also prevents thebar100 from rolling down the lifter's neck when approaching the lowest point of movement in the routine. Since thebar100 is completely stabilized, the lifter can achieve the full depth of the routine, and the risk of injury is greatly reduced.
• Although only an exemplary embodiment of the invention has been described in the detail above, those skilled in the art will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included with the scope of this invention as defined in the following claims.

Claims (10)

1. A free weight bar stabilizer for use with a standard bar with barbell plates attached at opposing ends of the bar, the stabilizer comprising:

a frame;

a beam pivotally attached to the frame at a pivot point, and being disposed to pivot about a horizontal axis, the beam being pivotally movable between a raised position and a lowered position;

a carriage movably attached to the beam and being movable between a retracted position and an extended position, the carriage including horizontally spaced arms with points of attachment at their distal ends disposed to selectively receive the bar;

wherein the bar is movable within an envelope defined by the points of attachment wherever the beam moves between its raised and lowered positions, and the carriage moves between its retracted and extended positions.

2. The stabilizer ofclaim 1, further including a carriage counterweight wherein the beam includes a front section forward of the pivot point to which the carriage is attached, and a rear section rearward of the pivot point to which the carriage counterweight is attached.

3. The stabilizer ofclaim 2, wherein the carriage counterweight is movably attached to the rear section of the beam, and is movable between a forward position and a rearward position.

4. The stabilizer ofclaim 3, further including a linkage attached to and interconnecting the carriage and the carriage counterweight, wherein as the carriage moves from its retracted position to its extended position, the carriage counterweight simultaneously moves from its forward position to its rearward position.

5. The stabilizer ofclaim 4, wherein the linkage includes a forward pulley attached to the front section of the beam, a rearward pulley attached to the rear section of the beam, a front cable carried on the forward pulley and being attached to and interconnecting the carriage and the carriage counterweight, and a rear cable carried on the are rearward pulley and being attached to and interconnecting the carriage and the carriage counterweight.

6. The stabilizer ofclaim 2, further including a assisting weight bar positioned on the frame, and an assisting weight bar hook operably attached to the rear section of the beam disposed rearward of the pivot point, the hook being disposed below the assisting weight bar, wherein the hook engages and lifts the assisting weight bar at a predetermined point as the front section of the beam moves toward its lowered position.

7. The stabilizer ofclaim 6, further including a hook plate attached to the rear section of the beam and including a plurality of hook receiving points on the plate spaced above and below the beam, wherein the assisting weight bar hook is selectively received at one of the plurality of hook receiving points, and wherein the predetermined point where the hook engages and lifts the assisting weight bar is determined by placement of the hook.

8. The stabilizer ofclaim 7, wherein the hook plate has an arcuate a shape, and the hook receiving points are spaced in an arcuate path on the hook plate.

9. The stabilizer ofclaim 1, further including a spotting rail attached to the frame and being disposed at a lower section of the bar envelope.

10. The stabilizer ofclaim 7, wherein the spotting rail is a vertically adjustable.

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